Electric transmission of intelligence.



I. KITSBE. ELECTRIC TRANSMISSION OP INTELLIGENCE. APPLICATION FILED 0613.2, 1908. RENIIWIIDl JAN. 13.11914` 1 ,096, 1 75.

Patented May 12, 1914.

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WITNESSESL v 5MG I l" UNITED sTATEs PATENT oEEIcE.

ISIDOR KITSEE, OIE'v PHILADELPHIA, TEENNSYLVANIA, ASSIGNOR, BY DIRECT .AND MESNIL?. ASSIGNMENTS, TO AMERICAN 'IlELEPHON131 AND TELEGRAPH COMPANY, OF NEW YORK, N. Y.. A'CORPORATION OF NEW YORK.I

Specification of Letters Patent.

ELECTRIC TRANSMISSION OF INTELLIGENCE.

Patented May 12, 1914.

Application led October 2, 1908, Serial No. 455.800. Renewed January 13` 1914. Serial No. 811,899.

. To all who/n, 'it may concern Be it known'that I. Ismon KiTs-EE. citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in ElectricTransmission of Intelligence, of which the following is a specification.

My invention relates to an improvement inthe electric transmission of intelligence and has more special reference to transmission over long distance llnes,`such for instance as submarine cables.

To-day. in a Submarine cable, only one working line can be employed, for the reason that if two working lines, are placed parallel to `each other, the disturbance through induction from one conductor to the other conductor would make the working on any of these conductors impractical. The delicate instruments employed in submarine cables would easily be affected by ythe'impulses induced from one conductor into the neighboring conductor.

It is the aim of my invention to provide conductors inclosed in a cable with means to shield them from the inductive influence of neighboring conductors and thereby make it possible rto produce a submarine cable with two or more working lines, each adapted to kbe worked independently from the other.

In the accompanying drawing, Figure 1 is a longitudinal section of a cable comprising two working lines provided with my invention. Fig. 2 is a section of Fig. l on the line .v Fig. 8 is a diagrammatic view showing the electrical connections. Fig. 4 is a diagrammatic view illustrating the connections in modified form.

In the drawing, 1 is the cable as an entirety; 2 and 3 are two working lines. The line 2 is provided with the conductino shield 4 and the line 3 is provided with tie conducting shield 5. This conducting shield may be in the form of a braiding or tube, or may consist of any preferred construction, the only requirement being that the line proper should be, as much as ossible, surrounded in its entirety by this s ield.

The shield of line 2 is here shown as to be divided into four sections and designated as 4, 4", 4, and 4d. The shield of line 3 is also 5*, 5", 5, and 5". The different sections of the shield -L are conductively connected. with the ditIerent'sect-ions of the shield 5, so as to torni a conducting circuit in a manner so that alternate sections of one shield connect with alternate sections of the second shield; the terminal sections being connected in series. The circuit, therefore. starting from the section 4 of the shield 4 is arranged as follows: 4, one terminal of 5b, the other ter minal of 5b connected to 4, the second terminal ot' 4c connected to 5d; the free terminal of 5l1 connected to one terminal of 4d; the free terminal of 4d connected to one terminal of 5a; the opposite terminal of 5 connected to one terminal of 4b; the second terminal of 4b connected to one terminal of 5a; the end terminals 'of 4a and 5a connected in series. It will thus be seen that the different sections of the two shields are, electrically considered, transposed as to their working lines. It is now supposed that an impulse is transmitted over the line 2 in the direct-ion .of the un'feathercd arrow and this impulse will induce in the section 4a an impulse flowing in the direction of the feathered arrow. This impulse has to flow through the alternate sections of the two shields in a manner, so as to be neutralized in the different sections of the shield 5. rIhe inductive influence, therefore, of the impulse in shield 4 will be nullified .or neutralized on the shield 5, and vice versa; an impulse generated in the shield 5 willbe, on account of the transposition, neutralized or nullifed on the shield 4. The inducing effect, therefore, of the line 2 on the line il will be fm'l, and vice versa; the inducing effect of the line 3 on the line 2 will be m'l. than one pair of working lines into one cable, then the shield sections of the different pairs may be connected in multiple, or the transposition of the different shield sections for the diferent working lines may be transposed substantially as is shown in the drawing; that is, they may be connected in series as to each other in a manner,- so that the flow of'an induced impulse from one section may be nulliied by the How of an induced im ulse from the adjoining section.

n the drawing, each line Wire is insulated from the shield and the shield of each working line is insulated from the shield of the other line through the entire length with the exception of those parts which are con- If it is desired to assemble more nectcd condnctirely together so as to Jform one circuit. I have shown in this drawing the braiding asto consistof -ourv separate conductors, but it is obvious that the number of these conductors may be increased or de creased at will Without departing from the -scope of my invention, and in this case, the

separate conductors may be connected so as to form more than two circuits and may also be connected so as to form only one circuit.

Having'now described my invention, what I claim as new and desire to secure by Let# ters Patent is l. In a system for electrically transmitting messages, a cable comprising a plurality of conductors in independent Working circuits, a shield conductor in said cable for each of said conductors, and means for con- ISIDR KITSEE.'

Witnesses EDITH S'rinnnr, MARY C. Sirrri Copies ot this patcntmay be obtained for five cents each., by addressing the Commissioner of Patents', Washington, D. C. 

